摘要
本文是应用声学原理中的近场理论,通过工程技术实践探讨测量低频扬声器频响的一种方法。近场测量只限于低频(Ka<1)活塞辐射范围,中、高频段频响借助于廉价的小型消声室测量,两者合成为一个整体频响。通过自由空间(大自然空间)测量验证这种方法是准确而可行的。这对我国生产扬声器的乡镇企业具有较大的实际意义。
In this paper a method base on the near-field theory of acoustics is used to measure the frequency response of the low-frequency loudspeaker through the engineering and technology practice. The near-field measurement is restricted to the range of low frequency piston radiation (ka<1), where the frequency response of the medium and high frequency bands can be measured by means of a small and low-price anechoic chamber, thus the two forming an over-all frequency response. Through the measurement of the free space, it has been proved that this method is feasible, within sufficient accuracy, and so this will be of more practical significance to the country-town enterprises manufacturing loudspeake in China.
出处
《电声技术》
北大核心
1991年第1期8-12,共5页
Audio Engineering
